QEI Doors, Gates, and Entrances 3

Question 1

What test does a Qualified Elevator Inspector perform to verify hoistway door interlock functionality?

Accepted Answer

Attempt to move the car with each landing door in a partially open position

Answer

The inspector attempts to operate the car with each landing door partially open in turn to verify that the interlock circuit prevents car travel unless all hoistway doors are fully closed and locked.

Question 2

What is the primary purpose of the entrance sill in an elevator doorway?

Accepted Answer

To protect the floor threshold and guide the bottom of door panels during their travel

Answer

The entrance sill provides a protective threshold at floor level and contains grooves or channels that guide the bottom of both car and hoistway door panels as they slide open and closed.

Question 3

What immediate action must a QEI inspector take if a hoistway door interlock fails during inspection testing?

Accepted Answer

Tag the elevator out of service until the interlock is repaired and verified

Answer

A failed hoistway door interlock creates an immediate risk of passengers falling into the hoistway; the elevator must be taken out of service immediately until the interlock is repaired and passes retesting.

Question 4

What is 'door dwell time' in the context of elevator door operation?

Accepted Answer

The time the door remains fully open at a landing before the closing sequence begins

Answer

Door dwell time is the period the elevator door remains fully open at a landing to allow passengers sufficient time to board or exit before the automatic closing sequence begins.

Question 5

What is the function of a retiring cam in older power-operated elevator door systems?

Accepted Answer

To retract the clutch vane as the car departs a landing, disengaging from the hoistway door

Answer

A retiring cam retracts the clutch pick or door vane as the car leaves a landing, disengaging the car door coupling from the hoistway door roller so the landing door is not dragged open as the car travels away.

QEI - Qualified Elevator Inspector Practice Test

QEI - Qualified Elevator Inspector Practice Test

QEI Doors, Gates, and Entrances 3